Rotating motor.



l. M. nAvlnsope- ROTATING MOTGR. APPLICATION FILED .IULY 1.1815.'

l laL mvirnn STATES lrA'rnN'r orricn. 1

mA iu. nAvInsoN, or Los ANGELES, CALIFORNIA, AssiGNon, BY DInnc'r'AND lSNN ASSIGNMENTS, or ONE-THIRD To GEORGE H. SHAW AND ONE-THIRD To N y MAN L. rIiILr, Born or Los ANGELES, cALironNIA.

BOTATING MGTOR.-

Specification of Letters Patent.

Patented Mar. `13, 19171n Application led July 7, 1915. Serial No. 38,616.

To all whom t may concern:

Be it knoivnthat l, IRA M. DAVIDSON, a citizen of the United States, residing; at

1 `Los Angeles, in the county ofLos Angeles and State of California, have invented a new and useful Rotating Motonof which the followinguis a Specification.

An object o" the invention is to provide a multi-cylinder., compound drive constant speed rotating motor adapted for internal combustion, electric, steamor other power VAo size.

The invention is designed to be particularly advantageous in the usev of power ,agen-` eratedlby internal combustion of gas or carb'ureted air, and the description herein will. set forth the construction and operation'of Vthe invention as applied for utilizing energy .4 from internal combustion and will serve to indicate the Inode of its application for the utilization of energy from Steam and electricity. l A

An object of the invention is to provide a highly effective motor, the balance of which relative to 'the power shaft driven by said motor will not be disturbedby the operation of 'the motor., thus adaptingthe motor in a highly advantageous manner to use 'for driving 'the propellers of aircraftr Another object of the invention isto maximize the efficiency of the motor, and

, incidentally minimize the noise of operation, by providing` a housing to encircle the power units and receivethe exhaust ,of 1nternal combustion or steam engines as" it issues from thelinternal combustion cham-y bers or from the steam cylinders,` as thel case may be, of suchengines.

Other objects 'are to provide a superiorv combination ot-l a 'multiplicity of energy units to communicate power to4 a singlel shaft; exact timing' of said units through the medium ofV a minimum number of parts;

-maximized equilibrium.

, lines.

minimized 4electric connection and simple construction `of means for igniting the charges in the internal combustion chambers; and simplicity of means for securing exact sequence of impulses from a multiplicity of units.

Other objects are cheapness, simplicity, rigidity 'and strength combined with lightness, ease of assembling and taking apart,

compactness and convenience of mounting. f

A further object is to make provision whereby the motor may lform the connection between its support anda driving' member in movable relation to Said' Support.'

The invention is constructed to employ theinertia of the'engine cylinders, pistons,

piston rods, and crank shafts to increase the eiliciency, certainty and steadiness of 0peration and the motor is constructed with its power cylinders and pistons arranged in' `parallelism with the power shaft ,andits fcranlr shafts radially arranged relative'to the power shaft, therebyk maintaining al The .accompanying drawings illustrate the invention as applied in the construction of a seven-cylinderinternal combustion rotating motor adapted to exert ltwenty-eight impulses upon the power shaft at each revo;`

lution; and indicates that form oflembodiment which I at present deem most satisfactory and effective for use with 'units of the internal combustion type.

Figure 1 is aplan, partly inl section and ,viewed from irregular line Fig. 2, Vcfa rotating motor constructed in accordance with this invention and arranged for applicationto automobiles, aeroplanes, and 1110-.-

tor boats; -and for vproducing` power for driving machinery of all kinds. Only -two Icylinders are indicatedrv the other cylinders that might appear from the nature of the view being omitted to avoid confusion of Fig. 2 is an end elevation, partly in section and viewed from irregular line wz, Fig. Al. 4Parts are broken away to show parts otherwise hidden. y

Fig. 3 is an elevation analogous to Fig'. 2,

beingpartly in section on line ma, Fig. l. 7

Theengine is shown-:with unit No. l-in ignition position, the same being;4 slightly behind the position shown inFig. 2.

Fig. i is a broken axial section showing a cylinder and crank case and attached parts on line ad, Figs. 1 and'2. Ar piston partly broken away for clearness of illustration is also shown, and the parts are in the position occupied at the moment of iinal exhaust and initial intake.

Fig. 5 isa cross section on line zu", Fig. 3, illustrating the ignition means.

Figs. 6, 7, 8, 9, 10, 11 and 12 are diagrammatic views illustrating the firing sequence of the respective units during one quarter turn of the power shaft. The tiring position of each 'unitis indicated b v heavy circles. Curved featheredarrows indicate the direction of revolution.

Arrows on the various section lines indicate the direction of sight.

In Figs. 2 and 3 the insulating bus-bar support is mottled to allow the dotted lines of concealed parts to show clearly.

In the combination constituting an internal combustion engine constructed in accordance with this invention, a set of internal combustion cylinders and a set of ignition devices are involved; one set being of an even number and the other set being of an odd number. tion the Inotor is shown as constructed with a set of seven cylinders 1, 2, 3, 4, 5, 6, T and a set of ignition points a, b, c, ci; andthe sequence of firing is 1, 6, 4, 2, 7, 5, 3. The

firing of this sequence occurs during eachA quarter of a revolution, thus making twentyeight impulses for one full revolution. The ignition points a, o, c, Z are relatively stationary points of electrical distribution and the ignition occurs when the spark plugs pass such points.

The motor comprises a shaft 8'; two frames 9, 10, in journaled and fixed relations res ectively to the shaft and relatively revo uble with respect to 'each other; power units 11; a bevel gear 12; said bevel gear on the one hand, and power units on the other hand being fixed to the fra-mes 9 and 10 respectively; and power-transmitting means 13 connecting the motor units 11 with the bevei gear 12 to cause relative rotation between the shaft and one of the frames when the motor units are operated.

Each motor unit may comprise a cylinder; as for instance, the cylinder 7 a piston head 14. and an ignition device 15.

The power-transniitting means connecting sai-:l motor unit with the bevel gear 12 may be a connecting rod 16, a pin 17 connecting said rainnecting rod with the piston head 14; a crank shaft comprising the journals 18, 19, fi-ank 2O with wrist-pin 21, a pinion seat 22 nl la reduced end bearing 23. Said power- `.nsmitting means also comprises a pinion on thel pinion seat 22; and a journal beari on the frame 10 adjacent the bevel For convenience of illustra Said bevel gear 12 in the construcbolts 26 to a standard 27 having flanges 2S bolted to the angle-iron body 29 of the frame 9 and forming a journal bearing for the shaft 8. Said frame 9 is provided opposite the standard'QT with an anti-friction journal bearing 30 that supports a part of the shaft S and allows it to rotate relative to the frame Said frame 9 .is constructed to constitute the base of the motor andwith this object in view is shown as provided with trunnions 31.

Said trunnions are adapted to be mounted in journal bearings. not shown, on the chassis or frame of the machine to be driven, thus leaving the shaft free to be attached to a driven part, such as the axle of an automobilethat is in movable relation to said chassis, so that the support of the motor is what may betermed a two-point support allowing direct connection to the axle or other driven part.

The internal combustion engine is of the.

two-cycle type, the explosive mixture or carbureted air being taken in through the carbureter 32 and conducted through a hollow section 33 of the power-shaft 8 which, with its connections, serves as a manifold, having hollow radial arms 39 communicating through ports 40 with the compression chamber 41 formed by the crank case 42 from which the carbureted air passes through channel and port'44 into the combustion chamber 45, being directed by the deflector 46 onward through theignition end of the internal combustion chamber where it is returned to the inlet end of the cylinder which is provided with the exhaust port 47 that opens outwardly away from the shaft 8 or axis of revolution of the engine cylinders.

Guard means 49 and 49 are fixed to the frames 9 and 10 respectively within the circle of abutments and surrounding the circle of power units, said guard 49 being provided with open ports 50, each extending therein for a distance corresponding to the period during which the exhaust port 4T may be opened by its pisto1i5'tl1us to admit the exhaust to said exhaust port 50. The guard 49 constitutes the inner wall of a hollow housing 51 in which the expanded exhaust, if any is conducted to the nal exhaust port 51 and the guard 49 is preferably formed by an annularly bent plate positioned with a close working fit adjacent or against said inner wall 49 of the exhaust chamber and having apertures 49 encircling and bein-g suitably secured to and revolving with the various cylinders. Studs s extending through the guard-plate and into the cylinders adjacent the exhaust port fix the guard-plate to the cylinders. See Fig. 1. By this arrangement the guard means 49 and 49 are revoluble relative to one another, the, guard means 49 serving as a port cover for that portion of each port 50 not in communication with an exhaust port 47 thus to fixed to said frame, crank shafts radial to said power shaft, pinions on the crank shafts.

the power shaft. nieans to suppl)v expansive nlediuin in the cylinders to drive said pistons. and a hollow housing rigidly inounted in the frame and encirclingr the cylinders and provided with ports adapted to register with said exhaust ports to thus receive the exhaust froni the cylinders.

2. A inotor comprising a fraine, a power lshaft journaled to said frame, a bevel-wheel fixed to said franie. crank shafts radial to said power shaft. pinions on the crank shafts meshing` with said be\el-wheel, cylinders arranged nparallelism with said power shaft and having exhaust ports opening outwardly from the shaft, pistons in said cylinders and connected to drive said crank shafts to turn the power shaft, means to supply expansive medium in the cylinders to drive said pistons, a hollow housing encircling the cylinders and provided with ports adapted to register with said exhaust ports to receive the exhaust from the cylinders, and an annular guard on the cylinders adjacent said housin T to cover the housing ports when said ports are not in connnunieation with the exhaust ports to thus prevent leakage through said housing ports.

In testimony whereof. I have hereunto set niv hand at Los Angeles, California. lis 2nd day of July, 1915.

- IRA M. DAVIDSON. 

